Shikaku

Shikaku (also known as Rectangles) is a logic puzzle with simple rules and challenging solutions.

The rules are simple. You have to divide the grid into rectangular and square pieces such that each piece contains exactly one number, and that number represents the area of the rectangle.

Click and drag to draw a rectangle. To remove lines use the right mouse button or hold the Ctrl or the Shift key.

Video Tutorial

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This Month
1.	Yuyinraoliang	00:07.36
2.	Lanmo	00:07.58
3.	eaxrec	00:07.65
4.	GeorgPfleger	00:08.06
5.	prinsed	00:08.58
6.	gh	00:08.70
7.	Landon9	00:09.45
8.	qobi	00:09.93
9.	Allentsen	00:10.11
10.	apple0	00:10.41
11.	astrofutu	00:11.71
12.	BestSlanterEver	00:11.76
13.	leeches	00:12.15
14.	John9439	00:12.41
15.	Huaiyun	00:12.79
16.	Wwwww79	00:12.82
17.	Javrem	00:13.41
18.	egosi	00:14.06
19.	Ilbibi	00:14.43
20.	grimmgirlfandom	00:14.82

This Week
1.	Lanmo	00:07.58
2.	Yuyinraoliang	00:07.76
3.	GeorgPfleger	00:08.06
4.	qobi	00:09.93
5.	Allentsen	00:10.11
6.	prinsed	00:10.92
7.	BestSlanterEver	00:11.76
8.	leeches	00:12.15
9.	Huaiyun	00:12.79
10.	Ilbibi	00:14.43
11.	grimmgirlfandom	00:14.82
12.	pranavhk	00:17.63
13.	korimel	00:18.26
14.	yaziblah	00:24.13
15.	yooha	00:47.77
16.	--- empty ---	--:--
17.	--- empty ---	--:--
18.	--- empty ---	--:--
19.	--- empty ---	--:--
20.	--- empty ---	--:--

Today
1.	--- empty ---	--:--
2.	--- empty ---	--:--
3.	--- empty ---	--:--
4.	--- empty ---	--:--
5.	--- empty ---	--:--
6.	--- empty ---	--:--
7.	--- empty ---	--:--
8.	--- empty ---	--:--
9.	--- empty ---	--:--
10.	--- empty ---	--:--
11.	--- empty ---	--:--
12.	--- empty ---	--:--
13.	--- empty ---	--:--
14.	--- empty ---	--:--
15.	--- empty ---	--:--
16.	--- empty ---	--:--
17.	--- empty ---	--:--
18.	--- empty ---	--:--
19.	--- empty ---	--:--
20.	--- empty ---	--:--

MO3
1.	zahhydude1	00:03.68
2.	vowels	00:03.92
3.	demian2	00:04.66
4.	BingBongBob	00:05.15
5.	nabi	00:05.27
6.	mtanzer	00:05.34
7.	bearn	00:05.38
8.	Vicell	00:05.55
9.	coolcoolguy65	00:05.61
10.	numbrr	00:05.72

AO5
1.	zahhydude1	00:04.18
2.	vowels	00:04.32
3.	demian2	00:04.92
4.	BingBongBob	00:05.39
5.	nabi	00:05.41
6.	bearn	00:05.55
7.	Vicell	00:06.12
8.	numbrr	00:06.22
9.	mtanzer	00:06.28
10.	qqwref	00:06.46

AO12
1.	zahhydude1	00:04.69
2.	vowels	00:04.92
3.	BingBongBob	00:05.84
4.	demian2	00:06.31
5.	bearn	00:06.41
6.	nabi	00:06.91
7.	Vicell	00:07.26
8.	sfumato	00:07.41
9.	qqwref	00:07.49
10.	mtanzer	00:07.81

Robots / programmatic solvers		info
1.	tlstyer	00:00.009
2.	Charlie Li	00:00.707
3.	--- empty ---	--:--

* MO3 - Mean of 3. The average of 3 consecutive times.
AO5 - Average of 5. The average of 5 consecutive times ignoring the highest and the lowest.
AO12 - Average of 12. The average of 12 consecutive times ignoring the highest and the lowest.
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2024-04-25 02:27:35

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